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MinimalPDF Compress

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What MinimalPDF Compress is

MinimalPDF Compress is a free, open-source Windows application for compressing PDFs and handling related document tasks. Modes include lossy compression, a lossless mode still under development, PDF/A conversion, and image removal. Utilities merge files, split or extract pages, rotate or delete pages, manage passwords, add watermarks and headers or footers, edit metadata, convert PDFs to images, and attempt repairs. Bundled tools include Ghostscript, cpdf, oxipng, pngquant, jbig2, zopfli, ECT, and pikepdf, so separate installation is not required. Processing is local; the README identifies update checks and donation links as exceptions to its no-network-activity description. Removing an owner password does not require knowing it, but decrypting a user-encrypted PDF does require its password. PDF/A-2b conversion may increase file size. The latest release is v1.9.7, although the title bar may show v1.10. Portable .exe and .zip downloads are available, and the repository uses AGPL-3.0.

Who it suits

It suits Windows users who want local PDF compression and utility tools in a portable desktop app. Readers handling encrypted files should distinguish owner-password removal from user-password decryption.

What it does well

  • Free and open source
  • Local PDF processing
  • Multiple compression modes
  • Bundled command-line dependencies
  • Portable .exe and .zip downloads

What to know first

  • Lossless mode is not yet truly lossless
  • PDF/A conversion may increase file size
  • User-encrypted PDFs require their password
  • Windows only

Verdict

MinimalPDF Compress covers compression and many PDF maintenance tasks without requiring separate dependency installation. Its developing lossless mode and password limitations should shape expectations.

Facts from MinimalPDF Compress's own pages

Bundled dependencies
The README says required command-line tools are bundled, so users do not need to install Ghostscript or other tools separately. · github.com, 8 Oct 2026
Compression modes
It offers lossy compression with image downsampling, a lossless mode, PDF/A-2b conversion, and image removal. · github.com, 8 Oct 2026
Compression tools
The compression pipeline uses tools including Ghostscript, cpdf, pikepdf, oxipng, pngquant, jbig2, and ECT. · github.com, 8 Oct 2026
Download format
The latest release offers a portable .exe or .zip, and the maker says the .zip starts faster because it is already unpacked. · github.com, 8 Oct 2026
License
The repository lists the AGPL-3.0 license. · github.com, 8 Oct 2026
Local processing
The maker says PDF processing happens locally and the application does not send files or data over the internet; network activity occurs when users click Check for Updates or Buy me a coffee. · github.com, 8 Oct 2026
Lossless caveat
The README says the lossless mode is still being worked on and is not truly lossless yet. · github.com, 8 Oct 2026
Password limitation
The app can remove an owner password without knowing it, but requires the password to decrypt a user-encrypted PDF. · github.com, 7 Oct 2026
PDF/A limit
The README notes PDF/A conversion can increase file size because it may add structural data. · github.com, 8 Oct 2026
PDF/A limitation
Converting to PDF/A-2b can increase file size. · github.com, 7 Oct 2026
PDF utilities
Utilities include merging, splitting or extracting pages, rotating, deleting pages, password encryption or decryption, watermarks, headers and footers, table of contents generation, metadata editing, PDF-to-image conversion, and repair attempts. · github.com, 8 Oct 2026
Portable download
The release page offers an .exe and .zip described as the same portable app, with the zip starting faster and potentially causing fewer antivirus false positives. · github.com, 7 Oct 2026
Product
MinimalPDF Compress is a Windows application for PDF compression and utility tasks. · github.com, 7 Oct 2026
Purpose
MinimalPDF Compress is an open-source Windows application for PDF compression and utility tasks. · github.com, 8 Oct 2026
Release version
The releases page identifies v1.9.7 as the latest release and says its title bar may display v1.10 by mistake. · github.com, 7 Oct 2026
Support
The README invites users to report problems in Issues and post suggestions in Discussions. · github.com, 7 Oct 2026
Support and contributions
The maker invites users to post problems in Issues and suggestions in Discussions, and welcomes contributions through pull requests. · github.com, 8 Oct 2026
User-encrypted PDFs
The password utility requires the password to decrypt a user-encrypted PDF; the README says owner passwords can be decrypted without knowing the password. · github.com, 8 Oct 2026

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